.lh-base, .lh-1 {line-height: 1};
.lh-2 {line-height: 1.25};
.lh-3 {line-height: 1.375};
.lh-4 {line-height: 1.5};
.lh-5 {line-height: 1.625};
.lh-6 {line-height: 2};